
assert.eq(17,
          db.eval(function() {
              return 11 + 6;
          }),
          "A");
assert.eq(17,
          db.eval(
              function(x) {
                  return 10 + x;
              },
              7),
          "B");

// check that functions in system.js work
db.system.js.insert({
    _id: "add",
    value: function(x, y) {
        return x + y;
    }
});
assert.eq(20, db.eval("this.add(15, 5);"), "C");
